What do you think will fail first in the JL driveline?

twisty

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the driveshaft is always turning. If you’re running aggressive or higher caster especially theres a strong possibility you’ll get vibration. If you break a two piece shaft, the probability of other damage is very high. The strength difference is relatively minor and unnecessary. I’m all about simplifying complicated systems or removing fail points and the only real way to do that with a m210 is replacing it with an axle that doesn’t have FAD. If that’s not an option upgrading the shafts to two piece works great

brett
I was going to go one piece RCV but my shop guy went that route and talked me out of it. He didnt like the way it drove and was noisier. Per him if he were to do it again he'd go two peice. I called the RCV peeps and per them it's less then 5% difference in strength between the two. When you add the strength of the upgrade that amount is a distinction without much difference.

Still, I'd rather not have a two piece unit. If and when someone comes up with a locking hub design I'd go that route. I would have done the 44 axle replacement by dynatrac but no locking hubs. And 60s are overkill.





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D60

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Yep I'd love lockouts on the M210.

I think the other fix for driveline noise is cut and turn the inner C's. Basically Jeep was able to ignore pinion angle with rzeppas.
 

twisty

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Unless your experience is atypical, 1/2 MPG loss is essentially nothing and IMO, worth every bit of strength you'd gain with the one piece.
For the 3.6 I agree. I had a TJ with a warn kit for full floating rear and locking hubs in the front. I normally just kept them locked since it wasnt a daily driver. On occasion I would unlock them and it was a difference you could immediately feel in extra power. I'll bet with the 4.0L the mpg was greater then 1/2 but never measured it cause I didnt care.

With the extra 100hp the 3.6 or 2.0 gets you I doubt you'd feel it at all, and mpg the same.
 

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well i snapped the rear passenger axle shaft in two and broke the transfer case first. replaced the front with a two piece also and have felt that it is actually less noisy than before, gas mileage? meh, who watches mileage on a jeep anyways? im not running RCV tho, they were too slow to respond and lost a sure sale. Guess when you deal with their head sales guy you got to wait. i went with Yukon as they called me back right away, not two days later. i have been totally satisfied and have watched others break their RCV's while my yukes are still holding strong so i guess it was a blessing.
 

twisty

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well i snapped the rear passenger axle shaft in two and broke the transfer case first. replaced the front with a two piece also and have felt that it is actually less noisy than before, gas mileage? meh, who watches mileage on a jeep anyways? im not running RCV tho, they were too slow to respond and lost a sure sale. Guess when you deal with their head sales guy you got to wait. i went with Yukon as they called me back right away, not two days later. i have been totally satisfied and have watched others break their RCV's while my yukes are still holding strong so i guess it was a blessing.
interesting, never heard of RCV's blowing before upgraded stuff. RCV's do break but it's pretty rare comparatively speaking....at least so I hope. lol

I got mine through a shop and it showed up immediatly. This was 6 months ago before covid hit. Plus it seems like RCV's are getting pretty popular too so it might explain the delay.

The bummer with RCV's is if they do take a poo, thinking your eph'd vs a likely more repairable solution with conventional stuff.
 

jlopes68

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interesting, never heard of RCV's blowing before upgraded stuff. RCV's do break but it's pretty rare comparatively speaking....at least so I hope. lol

I got mine through a shop and it showed up immediatly. This was 6 months ago before covid hit. Plus it seems like RCV's are getting pretty popular too so it might explain the delay.

The bummer with RCV's is if they do take a poo, thinking your eph'd vs a likely more repairable solution with conventional stuff.
This was long before covid. Actually almost 2 years ago now.
 

SPR Pumpkin Rubi

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I was going to go one piece RCV but my shop guy went that route and talked me out of it. He didnt like the way it drove and was noisier. Per him if he were to do it again he'd go two peice. I called the RCV peeps and per them it's less then 5% difference in strength between the two. When you add the strength of the upgrade that amount is a distinction without much difference.

Still, I'd rather not have a two piece unit. If and when someone comes up with a locking hub design I'd go that route. I would have done the 44 axle replacement by dynatrac but no locking hubs. And 60s are overkill.
RCV's are not noisy unless you hear a clicking which could be an issue. I went with the 2 piece because it's still under warranty and one less problem from Jeep if I need them. I'm an RCV dealer as well and have a lot of their product, from 35 spline 300m to utv products.

I sell dynatrac product as well but I think they nickle and dime the crap out of their customers. They want to reinvent the wheel on everything. To replace products, you almost have to go back to them because you cannot get it off the shelf. The Dana 60 rotor they have are thinner than normal chevy 60 rotor. The spindles usually notched in some way or another to make you come back and buy their product. Learned some of this the hard way.
 

DadJokes

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Hey guys, question. I have a Sahara and only plan on 33-34’s max. I don’t want to go down the slippery slope of axles as I don’t plan on more than moderate trails, enough to go camping/sight seeing off-road. I want to try the new M200 Ox Locker and wondered, since we’re in there, about upgrading the rear axles only.

Is that a good idea with the locker? Thanks
 
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Punknhed

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probably the damn clutch
 

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